Stop lever



061:. 23! F. E. F RRIS STOP EVER Filed Aug. 10. 1922 Patented 0a. 2a, 1923.

UNITED STATES 1,412,000 PATENT OFFICE.

FRANK E. FERBIB, OF DETROIT, MICHIGAN, ASSIGNOR TO SOCIETE DU CABBUBATEUR,

OF LYON, FRANCE, A CORPORATION 01 FRANCE.

STOP LEVER.

Application flied August 10, 1922. Serial No. 580,900.

T 0 all whom it may concern:

Be it. known that I, FRANK Ijl Frmms a citizen of the Uniled States, residing at ctroit, in the county of Wayne and State of Michigan, have invented a new and useful Improvement in Stop Lovers, of which the following is a full, clear, and exact (lescriplion.

The present invention relates generally to carburetors, and more particularly to stop lerbrs for use therewith and adapted to be operatively secured to the throttle valve shaft.

At the present time there is a decided trend in this art toward simplicity of construction with decreased manufacturing cost. It has heretofore been customary to provide more or less complicated stop lever constructions, usually having inde ndent means for maintaining the adjusta l e stop screw in the desired position. Such constructions, besides being cumbersome and expensive, are sometimes somewhat difficult to adjust. By the present invention there is provided a simple, inexpensive, and eflicient stop lever construction which may be easil adjusted as may be required, and whic will remain in adjusted position.

In the accompanying drawings there is illustrated a preferred embodiment of the present invention, it being understood that the drawings do not define the limits of this invention, as changes may construction and operation disclosed without departing from the spirit of my invention or scope of my broader claims.

In the drawings,-

Figure 1 is a side elevation of a portion of a carburetor construction showing the improved stop lever in position on the throttle shaft;

Figure 2 is a side view of the construction shown in Figure 1; and

Figures 3, 4 and 5 are detail views of the stop lever.

A stop lever constructed in accordance with the present invention preferably comprises a main body 2 of sheet material adapted to be easily stamped, and formed with a central opening 3. This opening is adapted to have secured therein in any desired manner a hub 4 by means of which the stop lever my be secured in the desired position on the throttle shaft 5.

Extending outwardly from the hub porbe made in the formed by providing a blank, as illustratedin I Figure 3, having portions 10 and 11 adapted to be bent into overlapping relationship by bending along the line 12. This line of bending preferably extends substantially parallel to the length of the arm 9 and substantially at right angles to the axis of the opening 13 formed by the overlapped portions. As the line of bending is adjacent one end of the opening 13, it will be obvious that the opposite ends of the portions 10 and 11 are relatively unsupported, whereby yielding side walls for the opening 13 are provided.

The portions 10 and- 11 are preferably curved, as shown, whereby the opening 13 is substantially circular, to provide an effective holding means for the adjustable stop screw 14. During the bending operation, the portions 10 and 11 are preferably so bent that they extend out of parallelism, thereby providing a slightly ta ered opening. This opening is then tappe to provide internal screw threads 15 adapted to cooperate with the threaded body of the stop screw. During the tapping operation, the sides of the opening will be slightly forced outwardl but they will exert a wedging action or binding action on the tap. When the tap is removed, the portions 10 and 11 will tend to resume their original positions, whereby when the screw 14 is inserted the wedgin'g action will again take place.

This construction has been found to be very advantageous, as the resultant clamping and wedging action exerted on the stop screw effectively holds it in adjusted position, while permitting easy adjustment thereof, as may be found necessary. This obviates the use of a se clamping means for the a justing screw.

The advantages of the present invention arise from the simplicity of the construction provided and from the efl'ect'ive manner of olding the stop screw in adjusted position arate holding or while permitting the desired adjustment thereof.

I claim:

1. In a stop lever, a main body having an arm comprising overlapped portions extending out of parallelism and forming a tapered opening for an adjustable stop, the

ortions formin the walls of said opening eing capable o a greater yielding movement at the small end of said opening than at the large end thereof, substantially as described.

2. In a stop lever, a main body having an arm comprising overlapped portions extending out of parallelism and formed with curved sides providing a substantially circular tapering stop-receiving opening, the portions forming the walls of said opening being capable of a greater 'ielding movement at the small end of sai opening than at the large end thereof, substantially as described.

3. In a stop lever, a. main body having an arm comprising overlaplped portions connected at one end and re ative y free at the opposite end and extending out of parallelism and forming an opening, said opening being threaded to receive a stop screw, and a stop screw in said opening, substantially as described. I

4. In a stop lever, a main body having an arm comprising overlapped portions extending out of parallelism and forming an opening, said opening being threaded to receive a'stop screw, and-a sto screw in said opening, said portions being at into overlapping relationship along a line extending at substantially rightangles to the axis of said screw, substantially as described. I

5. In a stop lever, a main bodyq having an arm comprising portions overla alon a line extending substantially mm ti the length of the arm to rovide a she receiving opening, substantially as described.

6. In a stop lever, a main body havi an arm comprising portions overlap s along a line extending substantially parallel to the length of the arm, said portions extending out of parallelism to provide a tapered opening therebetween, substantially as described.

7. In a stop lever, a main body having an arm comprising curved portions overlapped along a line extending substantially parallel to the length of the arm to provide a circular opening, the walls of said opening being tapped, and a stop screw adjustably threaded in said opening, substantially as described.

8. In a stop lever, a main body having an arm comprising portions overlapped to provide an opening, said portions being overlapped by bending along a line adjacent one end of the opening and extending at substantially right angles to the axis thereof. substantial] as described.

9. In a stop ever, a main body having an arm-comprising portions overlapped to provide an opening, said portions being overlapped by bending along a line adjacent one end of the opening and extending at substantially right angles to the axis thereof, and an adjustable stop screw in said opening, said portions exerting a binding action on said screw, substantially as described.

In testimony whereof I have hereunto set my hand.

FRANK E. reams.

Certificate of Correction.

It is hereby certified that the assignee in Letters Patent No. 1,472,000, ted October 23,1923, upon the apglication of F rank E. Ferris, of Detroit, lchigan, for an improvement in Stop levers, was erroneously described and specified as Sociate du Carburateur, whereas said assignee should have been described and specified as Societe du Garburateur Zenith, as shown by the remrds of assignments in this ofliee; and that. the said Letters Patent should he mnd vith this correction Signed and sealed this 27th day of November, A. D., 1923.

KARL FENNIHG,

Acting CMuiamr of PM. 

